CVE-2025-66482
CVE-2025-66482 · Misskey has a login rate limit bypass via spoofed X-Forwarded-For header
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Misskey is an open source, federated social media platform. Attackers who use an untrusted reverse proxy or not using a reverse proxy at all can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option (`trustProxy`) has been added in config file to prevent this from happening. However, it is initialized with an insecure default value before version 2025.12.0-alpha.2, making it still vulnerable if the configuration is not set correctly. This is patched in v2025.12.0-alpha.2 by flipping default value of `trustProxy` to `false`. Users of a trusted reverse proxy who are unsure if they manually overode this value should check their config for optimal behavior. Users are running Misskey with a trusted reverse proxy should not be affected by this vulnerability. From v2025.9.1 to v2025.11.1, workaround is available. Set `trustProxy: false` in config file.
CVSS 6.9 · Moyenne · EPSS 0,3% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
misskey
- Versions du logiciel
- >= 2025.9.1, < 2025.12.0-alpha.2: Concernée
Aucun correctif publié
misskey-js npm
- Plages de versions concernées
- SEMVER: ≥ 2025.9.1, < 2025.12.0-alpha.2
Mettez à jour vers 2025.12.0-alpha.2